There are lots of possible explanations for why humans became bipedal, including changing ecosystems and food resources. But what if it was just so it was easier for early humans to beat the crap out of each other?

Lego biped robots are a dime a dozen, even while some look pretty sweet. This one is special: It's the first walking Lego robot. And, unlike your usual feet-dragging toy robots, it actually walks by raising its feet.